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		<H3><A name="HDRREDUCE" ></A>Reduce</H3>
		<A NAME="IDX641"></A><A NAME="IDX642"></A>
<P><STRONG>Category</STRONG>
<P>
<A HREF="refgu008.htm#HDRCATIAE">Import and Export</A>
<P><STRONG>Function</STRONG>
<P>
Computes a reduced-resolution version (or group of versions) of
a field.
<P><STRONG>Syntax</STRONG>
<PRE><STRONG>
reduced</STRONG> = Reduce(<STRONG>input, factor</STRONG>);
</PRE>
<P><STRONG>Inputs</STRONG>
<BR>
<TABLE BORDER>
<TR>
<TH ALIGN="LEFT" VALIGN="TOP" WIDTH="20%">Name
</TH><TH ALIGN="LEFT" VALIGN="TOP" WIDTH="20%">Type
</TH><TH ALIGN="LEFT" VALIGN="TOP" WIDTH="20%">Default
</TH><TH ALIGN="LEFT" VALIGN="TOP" WIDTH="40%">Description
</TH></TR><TR>
<TD ALIGN="LEFT" VALIGN="TOP" WIDTH="20%"><TT><STRONG>input</STRONG></TT>
</TD><TD ALIGN="LEFT" VALIGN="TOP" WIDTH="20%">field
</TD><TD ALIGN="LEFT" VALIGN="TOP" WIDTH="20%">none
</TD><TD ALIGN="LEFT" VALIGN="TOP" WIDTH="40%">field to be reduced
</TD></TR><TR>
<TD ALIGN="LEFT" VALIGN="TOP" WIDTH="20%"><TT><STRONG>factor</STRONG></TT>
</TD><TD ALIGN="LEFT" VALIGN="TOP" WIDTH="20%">scalar list or vector list
</TD><TD ALIGN="LEFT" VALIGN="TOP" WIDTH="20%">2
</TD><TD ALIGN="LEFT" VALIGN="TOP" WIDTH="40%">reduction factor(s)
</TD></TR></TABLE>
<P><STRONG>Outputs</STRONG>
<BR>
<TABLE BORDER>
<TR>
<TH ALIGN="LEFT" VALIGN="TOP" WIDTH="25%">Name
</TH><TH ALIGN="LEFT" VALIGN="TOP" WIDTH="25%">Type
</TH><TH ALIGN="LEFT" VALIGN="TOP" WIDTH="50%">Description
</TH></TR><TR>
<TD ALIGN="LEFT" VALIGN="TOP" WIDTH="25%"><TT><STRONG>reduced</STRONG></TT>
</TD><TD ALIGN="LEFT" VALIGN="TOP" WIDTH="25%">field or group
</TD><TD ALIGN="LEFT" VALIGN="TOP" WIDTH="50%">set of reduced-resolution data
</TD></TR></TABLE>
<P><STRONG>Functional Details</STRONG>
<P>
Reduces the resolution of regularly connected grids.
Box filtering is applied to minimize aliasing effects in the components
that are associated with the grid.
It filters and reduces the number of items in the "data" component
of the input field and also in any components that are position or
connection dependent.
<TABLE CELLPADDING="3">
<TR VALIGN="TOP"><TD><B><TT><STRONG>input</STRONG></TT>
</B></TD><TD>is the field to be reduced.
It must have regular connections.
</TD></TR><TR VALIGN="TOP"><TD><B><TT><STRONG>factor</STRONG></TT>
</B></TD><TD>specifies the reduction factor(s) to be used in reducing the
resolution of the field.
</TD></TR></TABLE>
If this parameter specifies:
<UL COMPACT>
<LI><I>a single scalar value:</I> the output is reduced by that
factor in all dimensions.
<LI><I>a vector:</I> each vector element is applied to the
corresponding dimension.
<LI><I>a list of scalars or vectors:</I> the output is a group of
fields, each with the corresponding factor applied.
</UL>
<P><STRONG>Components</STRONG>
<P>
All components in the input are propagated to the output.
Components dependent on "positions" or "connections" are
filtered.
<P><STRONG>Example Visual Programs</STRONG>
<PRE>
GeneralImport2.net

ManipulateGroups.net

VolumeRendering.net
SIMPLE/Reduce.net
</PRE>
<P><STRONG>See Also</STRONG>
<P>
&nbsp;<A HREF="refgu114.htm#HDRREFINE">Refine</A>,
&nbsp;<A HREF="refgu131.htm#HDRSELECT">Select</A>,

&nbsp;<A HREF="refgu048.htm#HDRDISPLAY">Display</A>
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